Rotary machine for well drilling



Sept. 1, 19316 'E. TIMBS ROTARY MACHINE FOR WELL DRILLING Filed May 2,1927 2 Sheets-Sheet l Sept. 1, 1931. E. TIMBS ROTARY MA CHINE FOR WELLDRILLING 2 Sheets-Sheet 2 Filed May 2, 1927 gwuentoz Patented Sept. 1,1931 UNITED STATES PATENT OFFICE EDWARD TIMES, LOS ANGELES, CALIFORNIA,ASSIGNOR TO THE NATIONAL SUPRLY COMPANY OF DELAWARE, OF NEW YORK, N. Y.,A CORPORATION OF DELAWARE ROTARY MACHINE FOR WELL DRILLING Applicationfiled Kay 2,

This invention relates to rotary machines, and is more particularlyrelated to a rotary machine adapted for use in drilling oil and likewells, the construction of which is-such as to provide a unit assemblymachine which may be transported from place to place and easily set inposition in the well derrick or rig and it likewise includes a unitassembly pinion shaft providing an overhanging 1o sprocket which may beremoved from the assembly as a unit. J

An object of this invention is to provide arotary machine for use inconnection with the drillingof wells, which is constructed so as topermit the same to be assembled as a unit and which is provided with aunitary assembly pinion shaft providing an overhanging sprocket.

Another object of this invention is to provide a rotary machine for usein connection with the drilling of wells, which is of such constructionas to provide a unitary assembly and which includes a unitaryassemblypinion shaft providing an overhanging sprocket intermediatewhich unit assembly pinion shaft structure and rotary machine, there isprovided a rotation lock.

Another object of this invention is to provide a rotary machine for usein drilling wells, which includes a base, atable supported by the base,the table and base being so constructed as topermit the same to beassembled with a unitary assembly pinion shaft structure, and whichrotary machine is likewise provided with a hold-down bracket which issecured to the base and rotatably connected with the table above thegear teeth of the table, and which hold-down bracket provides aguard-preventingthe introduction of foreign matter into the structure ofthe rotary machine.

\ Other objects and advantages of this invention, it is believed, willbe apparent from thefollowing detailed description of a pre: ferredembodiment thereof, as illustrated in the accompanying drawings.

In the drawings:

Figure 1 is a perspective view of a rotary machine embodying thisinvention. l

1927. Serial No. 188,109.

Figure 2 is a central sectional'side elevation thereof.

' Figure 3 is an end section taken substantiallyon the line 33 of Figure2.

F lgure 4 is a sectional end elevation takensubstantially on the line4-4. I Figure 5 is a detailed view of the hold-. down bracket andintegral foot rest embodied in this invention. a

In the drawings, 1 illustrates a pair of skids, preferably formed ofmetal I-beams.

The skids 1 are spaced apart and support the base 2 of the rotarymachine. The base 2 is secured to-the upper transverse web 3 of theskids 1 by rivets 4 which are passed through bores formed in the base 2and through the upper web 3 of the skids 1. The'base 2 is preferablyformed with a depending section 5 which provides shoulders 6 whichengage with inclined teeth 13 which mesh with and o are driven by thepinion gear 14.

Meansare provided for rotatably support- I ing the table 9 on the ring 8of the base 2, which means are preferably of the following constructionMounted in the. annular recess 15 formed in the ring 8 is a bearing race16. Mounted on the reduced portion 17 of the table 9 below the shoulder18 thereof is a second bearing race 19. Mounted between the races 16 and19 are balls 20. The annular recess 15in which the bearing race 16 ismounted is of greater width than the width of the race 16 so as toprovide a lubricant receiving reservoir 20a into which lubricant isintroduced to lubricate the balls 20.

Means are provided for holding the-table- 9 down to the base 2 as thetable 9 is rotated,

. 9a of the ring 8 is a hold-down bracket 21 which in cross-section issubstantially of S-shape and which is preferably formed in two sectionsmeeting together on a diametrical line of the rotary table and aligningwith the axis of the driving pinion 14, so as to permit the same tobeclamped into position. The sections of the hold-down bracket 21 areheld in position by means of bolts 22 which are passed through thehorizontally extending flange 22a of the hold-down bracket 21 and thecircumferential flange 9a of the ring 8. The-upper inwardly extendingcircumferential flange 23 of the hold-down bracket 21 extends into anannular recess 24 formed in the ring 12 and bears, at its lower surface25, upon the surface 26 of the ring 12. Formed in the ring 12 arelubricant receiving reservoirs 27 which are provided with caps 28 whichare screw-threaded into position so that their upper surface is flushwith the upper flat surface of the table 9. The lubricant receivingreservoirs 27 are provided with outwardly extending ports 28a throughwhich the lubricant within the reservoirs 27 is thrown by centrifugalforce to lubricate the bearing surfacebetween the holddown bracket 21and the rotarytable 9. The hold-down bracket 21 provides a guard whichencloses the gear provided by the teeth 13 and the bearings provided bythe balls 20 preventing dirt or other foreign matter to be introducedinto the working parts of the rotary machine.

Formed on one section of the hold-down bracket 21- is a foot rest 29which is provided with a serrated surface 39. The foot rest 29 isprovided so as to provide a support against which the operator rackingthe drill stem as the same is taken apart in sections or stands maybrace his foot against to enable him to pull thelower portion'of thestand which-is hung up in the oil well rig over to the part of the rigwhere the same is to be stood on end.

Means are provided for supplying lubricant to the reservoir 20a forlubricating the balls 20, which means preferably comprise a boss 31which is cast integral with one portion of the hold-down bracket 21 andfrom which there is provided a passage communieating with the interiorof the hold-down bracket 21 so that lubricant may pass into the interiorof the hold-down bracket 21 and into the reservoir 20a. The ring 8 isprovided on its inner periphery with an upstanding annular flange 32which provides on its inner surface a bearing surface for the reducedportion of the table 9 and through which recesses 33 are formed atspaced intervals so as to permit lubricant from within the reservoir 20ato overflow and lubricate the bearing surfaces between the ring 8 andreduced portion of the table 9.

In order to rovide an easily transportable unit assem ly rotary machine,it is preferable that the pinion gear 14 be mounted upon anindependently assembled pinion shaft unit which isedetachably connectedas a unit to the rotary machine. In order to accomplish this result, thefollowing construction is provided: I

Formed in the outwardly extending portion 34 of the base 2 are parallelways 35 which are spaced apart. A housing 36 is provided for enclosingthe bearings and shaft 37 to which the pinion gear 14 is secured. Thehousing 36 is provided with oppositely extending feet 38 which fitwithin the ways 35. Bolts'39 are passed through the feet 38 and throughthe portion 34 of the base 2. In order to permitthe pinion gear 14 to beinserted in position to engage the teeth 13, the hold down bracket 21 iscut-away, as illustrated at 40. Formed around the cut-away portion 40 ofthe bracket 21 is a boss 41. The pinion gear 14 is secured to the shaft37 by any suitable or desirable means, such as the key 42. The piniongear 14 is provided with a cylindrical, rearwardly extending section orhub 43 upon which a lock ring 44 is mounted and secured by a key (seeFig. 3). The lock ring 44 is of course, of considerably larger diameterthan the hub of the pinion, and is so formed as to provide a guard ofenlarged area to impart thrust to the end of the bearing housing and toprevent the introduction of dirt and foreign matter into the end thrustthe end of the housing 36 and the shoulder 46 of the pinion gear 14.Secured to the base I 2 by means of pins 47 which'pass through eyes .48formed integral with the base 2 are lock bars 49 which are adapted to beengaged within cutaway recesses 50 formed in the lock ring 44.

The housing 36 encloses roller bearings 51 and 52 upon which the shaft37 is journaled and is preferably of the following construction: 9

As heretofore set forth, the housing 36 is provided with feet 38 whichfit within the ways 35 provided in the base 2 and the housing 36 also isconstructed so as to permit the same to be moved from off the shaft 37when it is desired to take out or repair either of the bearings 51 or52. The housing 36 is preferably cylindrical in form so as to enclosethe shaft 37 and is, on its inner surface, provided with a section ofreduced diameter, as illustrated at 53- Within which the bearing sleeve54 is fitted. Mounted on the shaft 37 is a secondv bearing sleeve 55.Intermediate the bearing sleeves 54 and 55 are mounted rollers 56. Theshaft 37 is of increased diameter at the section 57 and a sleeve 58 ismounted on this section of increased diameter in position to engage atits outer end the bearing sleeves 54 and 55. The sleeve 58 is providedat its outer end with a' circumferential flange 59 which is ofsubstantially the same exterior diameter as the interior diameter of thehousing 36 at the portion of reduced diameterof the housing 36. Thesleeve 58 is, at its opposite end, provided with a secondcircumferential flange 60 which is of larger diameter than thecircumferential flange 59 and is of substantially the same exteriordiameter as the interior diameter of the portion 61 of the housing 36.The sleeve 58 engages at its in transversely extending ducts 66. Theducts 66 communicate with circumferen'tially extending ducts 67 formedin the bearing sleeves 54 and 63, respectively. Caps 68 are provided forenclosing the lubricant fittings 65.

Secured to the end of the housing 36 is. an

i end plate 69. Interposed between the face of the end plate 69 and theend 70 of the housing 36 are shims 71. The bearing plate 69 engages onits inner surface the outer ends of the bearing sleeves 54 and 55 sothat the entire bearing assembly within the housing 36 may be adjustedlongitudinally of the shaft 37 to take up wear upon the end thrustwashers so as to insure correct engagement of the threads of the. piniongear 14 with the threads 13 of the ring 12. This adjustment isaccomplished by use of the proper shims 71 between the end of thehousing 36 and end plate 69.

Means are provided for maintaining one of the thrust washers 45stationary, which means preferably comprise a pin 72 which is insertedinto position Within a slot formed in the housing 36 through a cut-awayformed in the thrust washer. The other thrust wash- 'er 45 is permittedto float freely in position.

Mounted on the end of the shaft 37 is a sprocket 73 which overhangs theentire rotary machine structure. The sprocket 73 is preferably providedwith a longhub. 74 to provide sufficient bearing surface on the shaft 37and is secured to the shaft 37 by means of the key 75, which is insertedwithin a tapered key-Way 175 formed on the interior of the hub 74. Inorder to permit the sprocket 73 to be reversed in position on the shaft37 so that the same may be alined with the drive sprocket of the rotarydraw works, not shown, the inner periphery of the hub 74 is providedwith an oppositely inclined keyway 176 into which the key may be fitted.Secured to the end of the shaft 37 .is a cap 76 which is secured inposit-ion .by means of a bolt 77 screw-threaded to the end of the shaft36. The sprocket teeth 177 of the sprocket 73 are formed in-ofi' centerposition on the hub 74 preferably at one end thereof to provide anadjustment of the teeth 77 in relation to the rotary drive sprocket ofthe draw works (not shown) when the hub 74 is reversed on the sh aft 37.

In order to permit'aguard, not shown,

to be secured to the rotary machine assembly, an ear 78 is formed on thebase 2 and a second ear 79 is secured on one of the skids 1. Between theears 78 and 7 9,-a rod 80 is secured in which the guard, not shown, maybe pivotally mounted. i

Mounted between the transversely extending webs of the I-bea'ms 1 on theexterior of the rotary machine assembly are plates 81 which provide abearing surface against the derrick sills (not shown) between which therotary machine is set. The plates 81 are provided to overcome thetendency of the beams 1 to cut into the sills due to the pull of therotary drive chain (not shown) on the overhanging sprocket 73.

Having fully described my invention, it is to beunderstood that I do notwish to be limited to the details of construction herein set forth whichmaybe varied'without departing from the spirit of my invention, as

defined by'the appended claims.

I claim:

1. In a rotary machine, the combination of a base, a table rotatablysupported by the base, ,means mounted on the base for driving the table,which means preferably comprise a housing removably secured to the base,a shaft journaled in hearings in the housing, a pinion secured to theinner end of the shaft in positionto mesh with gear teeth formed onthe'table, and a rotation lock including an element secured on the hubof the pinion overhanging the end of the housing, and an elementmountedon the base and adapted to be engaged with the element mounted on theshaft.

2. In a rotary machine, the combination of a base, a table rotatablysupported by the base, means mounted on the base for driving the table,said means including a housing removably secured to the base, apinionshaft journaled in bearings in the housing, a pinion gear securedto the end of the housing in position to mesh with gear teeth formed onthe table, a holddown ring covering the teeth of the table and thepinion, formed in two sections meeting together on a line aligning withthe axis of the pinion, a lock ring secured to the hub of the pinionsintermediate the pinion gear teeth and the housing,

a base, a table rotatably supported by the base, a housing secured tothe base, a pinion shaft journaled in bearings mounted in the housing, apinion gear secured to the inner -end of the shaft in position to meshwith gear teeth formed on the base, a lock ring secured to the hub ofthe pinion intermediate the pinion gear teeth and the housing and havinga recess on its outer face receiving the inner adjacent end of thehousing, and means secured to the base and adapted to be releasablyengaged with the lock ring to secure the pinion shaft to the base.

4. In a rotary machine, the combination of a base, a table rotatablysupported by the base, a housing removably secured to the base, a pinionshaft journaled in bearings in the housing, a pinion with a hub securedto the shaft in position to mesh with teeth formed on the table, a lockring secured at the hub of the pinion gear, of larger diameter than thepinion hub, thrust washers interposed between the lock ring and thehousing, and imparting the thrust of the shaft to the end of thehousing, and means secured to the base and adapted to be engaged withthe lock ring to hold the shaft from rotating.

5. In a rotary machine, the combination of a base, a table rotatablysupported by the base, the base having a circumferentially extendingflange, a hold-down bracket in the form of a ring mounted on and securedto the flange, the rotary table having gear teeth formed on its underside under the hold down ring, the hold-down ring having an annularflange which extends into a circumferential recess formed in the rotarytable above the gear teeth in position to engage the bottom surface ofthe recess in the table.

6. In a rotary machine, the combination of a rotary table, a basesupporting the table and having an extension with seat-ways extendingsubstantially parallel to a radial line from the axis of rotation of thetable, said table having bevel gear teeth for rotating the same, adriving shaft with a pinion at its inner end for rotating the table, .alock ring adjacent the pinion, a bearing housing with two separatedearings within the same for the said shaft and constructed to slide overthe shaft from its outer end with the inner endof the housingsubstantially abutting against the'side face of the lock ring, saidhousing seating in the said seat-ways, and a sprocket wheel secured tothe outer end of the shaft beyond the hearing housing for rotating thesaid shaft.

7. In a rotary machine, the combination of a rotary table, a basesupporting the tableand having an extension with seat-ways extendingsubstantially parallel to a radial line 7 from the axis of rotation ofthe table, said table having bevel gear teeth for rotating the same, adriving shaft with a pinion at its inner end for rotating the table, alock ring adj acent the pinion, a pair of separated bearings for theshaft, the bearing adjacent to the rotary table being of larger diameterthan the outer bearing, a bearing housing seating in the said seat-waysand having a bore enabling the same to slip over the said shaft from theouter end, the said bpre being of larger diameter at its innereendadjacent the table to facilitate passing the housing over the outerbearing, and a sprocket wheel secured to the outer end of the shaftbeyond the bearing housing for rotating the said shaft.

8. In a rotary machine, the combination of a rotary table, a base havinga bearing for supporting the rotary table and having an extensionextending outwardly from the table on a radial line from the-axis ofrotation of the table, said table having bevel gear teeth for rotatingthe same, a driving shaft with the same with the inner end of thehousing substantially abutting against the side face of the lock ring, athrust washer disposed between the lock ring and the end of the bearinghousing, and a sprocket wheel secured to the outer end of the shaftbeyond the bearing housing for rotating the said shaft;

9. In a rotary machine, the combination of a rotary table, a basesupporting the table and having'an extension extending substantiallyradially from the axis of rotation of the table, said table having bevelgear teeth for rotating the same, a driving shaft with a pinion at itsinner end for rotating the table, a lock ring adjacent the pinion, apair of roller bearings for the said shaft disposed apart, a distancesleeve on the shaft separating the said roller bearings, a bearinghousing supported on the base and having a bore enabling the same toslide over the shaft from its outer end and receive the said rollerbearings with the inner end of the housing substantially abuttingagainst the outer face of the lock ring, and

a sprocket wheel secured to the outer end of I day of April, 1927.

' EDWARD TIMBS.

DISOLAlMER 1,821,366. Edward Timbs, Los Angeles, Calif. ROTARY MAcHINnFor: WELn DRILLING. Patent dated September 1, 1931. Disclaimer filedDecember 22, 1933, by the asslgnee, The National Supply Company ofDelaware.

Hereb enters this disclaimer to that part of the claims in saidspecification which is in the f0 owing words, to wit:

v 5. In a rotary machine, the combination of a base, a table rotatablysupported j by the base, the base having a circumferentially extendingflange, a hold dovvn bracket in the form of a ring mounted on andsecured to" the flange, the rotary table having ear teeth formed on itsunder side under the hold down rin the hold-down ring aving an annularflange which extends into a circumferentia (recess formed in the rotarytable above the gear teeth in posltion to engage the bottom surface ofthe recess in the table.

[ ial Gazette January 16, 1.984.]

